In a large bowl, beat margarine and sugar until light and fluffy.,Add eggs singly, beating well after each addition.,______,Combine yogurt and baking soda.,Add alternately with flour.,Beat in orange juice and rind.,Pour into well-buttered Bundt pan.,Bake in preheated oven at 325° to 350° for 40 to 45 minutes, until cake tester comes out clean.,Cool on rack; dust with powdered sugar.,Decorate with fresh strawberries and mandarin orange slices (optional).